Locking: The problem of a transaction being executed while the database is in a state of flux from another transaction leads to inadvertent interaction between the transactions and produce erroneous results. The sequence of transaction is: Transaction T 1 retrieves the balance of account A. Transaction T2 transfers $ 100 from account A to account B. Transaction T 1 retrieves the balance of account B and reports the sum.

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Chapter 9, Problem 44CRP

Program Plan Intro

Locking:

The problem of a transaction being executed while the database is in a state of flux from another transaction leads to inadvertent interaction between the transactions and produce erroneous results.

The sequence of transaction is:

Transaction T1 retrieves the balance of account A.

Transaction T2 transfers $100 from account A to account B.

Transaction T1 retrieves the balance of account B and reports the sum.

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